Question

Which of the following sums would be under the radical symbol to find the distance between the points (7, -1) and (-8, -9)?

Answer 1

for starters, it might be simpler to subtract one point from the other

Answer 2

(7, -1)
- (-8, -9)
--------
15 , 8 ; square these numbers and add them to get the under radical

Answer 3

Thanks ( :

Answer 4

good luck ;)

there is also a distance formula that can be used, but i have a tendency to put the numbers in the wrong places; so i use this setup to make it foolproof